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when he opened his bag on the train,he found that he------to

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/11/05 14:54:11
when he opened his bag on the train,he found that he------to put the clean shoes in
A forgot B forget C had forgot D would forget选那个那,我选C但是自己说不清楚为什么
C
从上下文看,因为前面是过去时(打开包),这里就应该用过去完成时(忘记带干净鞋子在打开包之前就已经发生了)